MY PITT BULL HAS SINCE WE HAVE MOVED TO THE COUNTRY, HE HAS BEEN KILLING ANY OTHER ANIMAL HE SEE, CATS- POSSOMS-BIRDS AND ESPEDIALLLY ANOTHER MALE DOG.HE HAS BEEN RUNNIN OFF INTO THE OTHER FARNS ABD WOODS, HE IS LOSING WEIGHT LIKE CRAZY,AND HE EATS 2X A DAY- HIS BODY HAS 2 INDENTIONS ONE ON EACH SIDE IN THE BELLY AREA, iTS LIKE ITS CURVED ON EACH SIDE- HIS COLLAR JUST SPENDS ON HIS NECK NOW,HIS TAIL ISNT EVEN WAGGIN THE SAME WAY-ITS LIKE ITS BEEN BROKE-BUT IT HAS NOT HE JUST LOOKS LIKE SOMETHING IS EATIN HIM INSIDE OUT..PLEASE!!!!!!LEASE HELP ME AND TELL ME WHAT YOU THINK COULD BE WRONG WITH MY POOPY'..THANK YOU MAMMAWPS. WE ALSO HAVE HEEN FINDING MONSTER TICKS ON HIM. CAN ANYOF THESE THINGS THAT I HAVE MENTIONED CAUSE HIM TO LOOK SO SICKLY AND LOSE ALL THAT WEIGHT?